Just my opinion, but if they wanted to sell more lights it would have been better to simply upgrade the led's and design them to take rechargeable batteries. This would have gone a long way towards increasing sales. They're still selling 120 lumen lights that only run for 2 hours on 2 primaries. Hell, I have single AA lights brighter than that and they run for almost as long. They need to upgrade led's and circuits, not discontinue.
As others have stated, I have no use for the newer designs that can't be upgraded and can't run on RCR's. I've pretty much gone from buying Surefires to buying Malkoffs.
The only Surefires I currently own are a Z2, G2, G2Z, and E2L-AA. I'll be keeping all of those except maybe the G2 as it's a newer one that can't be upgraded.